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Service bulletins for the 2016 Triumph Bonneville T120

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

117 on file from NHTSA, as of 2026-10-19.

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By component

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
SMTCOM0429JUL2012019-08-19. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Dealer notice advising how to prevent Instrument download failures and recover in the event a download has failed/interrupted.
SMTTB193112019-03-18. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE; EQUIPMENT; POWER TRAIN. Technical Bulletin 193 provides instructions that applies to California Proposition 65 Hang Tag Reminder (Californian Market Only), Front Subframe Cable Clips, Alternator Cover Sealant, Chassis ECM DTCs Flagged Incorrectly, Pin Point Test - Power Source Voltage Drop/Voltage Rise, Inner Tube Valve Nut, Swinging Arm/Chain Rubbing Strip - Parts Kit, Service Manual Correction - Rear Brake Disc Minimum Thickness, Service Manual Correction - Main Bearing Selection, Owners Handbook Correction - Scheduled Maintenance Chart, Motorcycle Assembly Guide - Windscreen Installation.
SMTCom0102Aug2012018-09-17. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Dealer notice announcing that Diagnostic software 2018-7 is now available and dealers should begin using it immediately.
SMT-TB188-27Marc2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:WINDSHIELD:ELECTRICAL HEATING ELEMENT; EQUIPMENT; ELECTRICAL SYSTEM; SERVICE BRAKES. Technical Bulletin 188 provides instructions that apply to Triumph Diagnostic Tool Compatibility with Windows Operating Systems, Fog Lights Warning, TFT Instruments - Calibration Update, Exhaust Header Nuts Tightening Sequence, Hugger Fixing, Pinpoint Test - Brake Switches, Alternator Cover Parts Kit, Starter Motor Parts Kit.
SMTTB18419Februa2018-05-21. Service bulletin. WHEELS; POWER TRAIN; ELECTRICAL SYSTEM. Technical Bulletin 184 provides instructions that apply to Electronic Systems Commissioning and Motorcycle Unlocking, Final Drive Belt, Front Fork Reflector, Clutch Cable Guide, Big End Bearing Selection Chart, Detent Wheel and Detent Lever Spring, Triumph Diagnostic Tool Compatibility with Windows Operating Systems, Rider Foot Pegs, Factory Activated Batteries (replaces Technical Bulletin 182).
SMT-Com01-23Janu2018-02-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Dealer notice announcing that Diagnostic Software 2018-1 is now available and dealers should begin using it immediately.
SMT-TN174-20Marc2017-12-14. Service bulletin. SERVICE BRAKES; FUEL SYSTEM, GASOLINE; SUSPENSION; ELECTRICAL SYSTEM; WHEELS; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); EXTERIOR LIGHTING; EQUIPMENT. Technical News 174 provides instructions that apply to Front Brake Calipers, Rider Configurable Modes, Breather Cover Bolts Tightening Sequence, Crankcase Tightening Sequence, Left and Right Hand Switch Housings, Owner's Handbook - Rake Specification Correction, Headlight Wiring Harness Routing, Silencer Alignment_DZ, Rear Indicator Bracket, Master Cylinder Hose Inlet Replacement, FOX Accessory Rear Suspension Unit, Clutch Lifter Piece, Regulator Rectifer Parts Kit, Scheduled Maintenance Chart - Ait Cooled Bonneville Models, Service Manual - Rear Disc Runout Specification Correction.
SMT-Com01-23Nove2017-11-03. Service bulletin. ELECTRICAL SYSTEM. Dealer notice announcing the correct connection of the oxygen sensors on specific models
SMT-TN174-20Marc2017-11-03. Service bulletin. SUSPENSION; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); EQUIPMENT; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; SERVICE BRAKES. Technical News 174 provides instructions that apply to Front Brake Calipers, Rider Configurable Modes, Breather Cover Bolts Tightening Sequence, Crankcase Tightening Sequence, Left and Right Hand Switch Housings, Owner's Handbook - Rake Specification Correction, Headlight Wiring Harness Routing, Silencer Alignment_DZ, Rear Indicator Bracket, Master Cylinder Hose Inlet Replacement, FOX Accessory Rear Suspension Unit, Clutch Lifter Piece, Regulator Rectifer Parts Kit, Scheduled Maintenance Chart - Ait Cooled Bonneville Models, Service Manual - Rear Disc Runout Specification Correction.
SMT-TN173-31Janu2017-11-03. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM. Technical News 173 addresses new instrument calibrations designed to be used in conjunction with Triumph accessory alarm kits
SMT-TN 159 1 Oct2017-11-03. Service bulletin. STEERING; EQUIPMENT:OTHER:LABELS; POWER TRAIN; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; ENGINE AND ENGINE COOLING; SUSPENSION. Technical service bulletin 159 addressing 19 service instructions, some of which apply to all models. Instructions relate to piston and piston top ring, alternator rotor retaining bolt, rear brake hose guide, auxiliary lights, headlight spares, gear selector drum and neutral light switch, pulser ring fixings, side stand fixing, battery terminal cover, heated grip fixings, headstock bearing adjustment, front and rear diretion indicator fixings, swinging arm, throttle linkage cleaning, headlight label, clutch lifter piece, rear brake caliper bleed nipple and owner's handbook.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.